Patents by Inventor Gregory Friebus

Gregory Friebus has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10698818
    Abstract: Systems and techniques for performing a data transaction are disclosed that provide data redundancy using two or more cache devices. In some embodiments, a data transaction is received by a storage controller of a storage system from a host system. The storage controller caches data and/or metadata associated with the data transaction to at least two cache devices that are discrete from the storage controller. After caching, the storage controller provides a transaction completion response to the host system from which the transaction was received. In some examples, each of the at least two cache devices includes a storage class memory. In some examples, the storage controller caches metadata to the at least two cache devices and to a controller cache of the storage controller, while data is cached to the at least two cache devices without being cached in the controller cache.
    Type: Grant
    Filed: February 8, 2018
    Date of Patent: June 30, 2020
    Assignee: NETAPP, INC.
    Inventors: Brian McKean, Gregory Friebus, Sandeep Kumar R. Ummadi, Pradeep Ganesan
  • Publication number: 20180165194
    Abstract: Systems and techniques for performing a data transaction are disclosed that provide data redundancy using two or more cache devices. In some embodiments, a data transaction is received by a storage controller of a storage system from a host system. The storage controller caches data and/or metadata associated with the data transaction to at least two cache devices that are discrete from the storage controller. After caching, the storage controller provides a transaction completion response to the host system from which the transaction was received. In some examples, each of the at least two cache devices includes a storage class memory. In some examples, the storage controller caches metadata to the at least two cache devices and to a controller cache of the storage controller, while data is cached to the at least two cache devices without being cached in the controller cache.
    Type: Application
    Filed: February 8, 2018
    Publication date: June 14, 2018
    Inventors: Brian McKean, Gregory Friebus, Sandeep Kumar R. Ummadi, Pradeep Ganesan
  • Patent number: 9916241
    Abstract: Systems and techniques for performing a data transaction are disclosed that provide data redundancy using two or more cache devices. In some embodiments, a data transaction is received by a storage controller of a storage system from a host system. The storage controller caches data and/or metadata associated with the data transaction to at least two cache devices that are discrete from the storage controller. After caching, the storage controller provides a transaction completion response to the host system from which the transaction was received. In some examples, each of the at least two cache devices includes a storage class memory. In some examples, the storage controller caches metadata to the at least two cache devices and to a controller cache of the storage controller, while data is cached to the at least two cache devices without being cached in the controller cache.
    Type: Grant
    Filed: August 14, 2015
    Date of Patent: March 13, 2018
    Assignee: NetApp, Inc.
    Inventors: Brian McKean, Gregory Friebus, Sandeep Kumar R. Ummadi, Pradeep Ganesan
  • Patent number: 9836404
    Abstract: Systems and techniques are disclosed for the mirroring of cache data from a storage controller to a storage class memory (“SCM”) device. The storage controller receives a write request, caches the write data, and mirrors the write data to the SCM device instead of to a cache of another storage controller. The SCM device stores the mirrored data in the SCM device. The storage controller acknowledges the write to the host. If the storage controller later fails, an alternate controller assumes ownership of storage volumes associated with the failed controller. Upon receipt of a new read request to the failed controller, the alternate controller checks the SCM device for a cache hit. If there is, the data is read from the SCM device; otherwise, it is read from the storage volume(s). The read data is cached at the alternate controller and then sent on to the requesting host.
    Type: Grant
    Filed: August 14, 2015
    Date of Patent: December 5, 2017
    Assignee: NetApp, Inc.
    Inventors: Sandeep Kumar R. Ummadi, Brian McKean, Gregory Friebus, Pradeep Ganesan
  • Publication number: 20170046268
    Abstract: Systems and techniques are disclosed for the mirroring of cache data from a storage controller to a storage class memory (“SCM”) device. The storage controller receives a write request, caches the write data, and mirrors the write data to the SCM device instead of to a cache of another storage controller. The SCM device stores the mirrored data in the SCM device. The storage controller acknowledges the write to the host. If the storage controller later fails, an alternate controller assumes ownership of storage volumes associated with the failed controller. Upon receipt of a new read request to the failed controller, the alternate controller checks the SCM device for a cache hit. If there is, the data is read from the SCM device; otherwise, it is read from the storage volume(s). The read data is cached at the alternate controller and then sent on to the requesting host.
    Type: Application
    Filed: August 14, 2015
    Publication date: February 16, 2017
    Inventors: Sandeep Kumar R. Ummadi, Brian McKean, Gregory Friebus, Pradeep Ganesan
  • Publication number: 20170046259
    Abstract: Systems and techniques for performing a data transaction are disclosed that provide data redundancy using two or more cache devices. In some embodiments, a data transaction is received by a storage controller of a storage system from a host system. The storage controller caches data and/or metadata associated with the data transaction to at least two cache devices that are discrete from the storage controller. After caching, the storage controller provides a transaction completion response to the host system from which the transaction was received. In some examples, each of the at least two cache devices includes a storage class memory. In some examples, the storage controller caches metadata to the at least two cache devices and to a controller cache of the storage controller, while data is cached to the at least two cache devices without being cached in the controller cache.
    Type: Application
    Filed: August 14, 2015
    Publication date: February 16, 2017
    Inventors: Brian McKean, Gregory Friebus, Sandeep Kumar R. Ummadi, Pradeep Ganesan